@@ -113,12 +113,12 @@ The key's randomart image is:
...
@@ -113,12 +113,12 @@ The key's randomart image is:
You will now see the key pair `~/.ssh/id_ed25519` and `~/.ssh/id_ed25519.pub` (or `~/.ssh/id_rsa` and `~/.ssh/id_rsa.pub`).
You will now see the key pair `~/.ssh/id_ed25519` and `~/.ssh/id_ed25519.pub` (or `~/.ssh/id_rsa` and `~/.ssh/id_rsa.pub`).
##### (on Windows: you can also use [PuTTY](PuTTY-key-generator) )
##### (on Windows: you can also use [PuTTY](PuTTY-key-generator) )
#### 2.2.2 Step 2: Transfer the public key
#### 2.2.2 Step 2: Transfer the public key
You can now send us the **public** key (`id_ed25519.pub`), either as a file or just copy-paste the public-key file content:
You can now send us the **public** key (`id_ed25519.pub`), either as a file or by copy-paste of the public-key file contents:
```
```
cat ~/.ssh/id_ed25519.pub
cat ~/.ssh/id_ed25519.pub
```
```
**Please send the public key to:****hpc-mgr@uni-koeln.de**
**Please send the public key to:****hpc-mgr@uni-koeln.de**
On Ramses, being the remote machine, the public key (\*.pub) will be a line-item in `~/.ssh/authorized_keys`. Together with your matching local private key, it enables ssh-authentication without password-request.
On Ramses, the remote machine, your public key (\*.pub) will be a one-line-item in your `~/.ssh/authorized_keys` file. Together with your matching local private key, it enables ssh-authentication without password-request.
#### 2.2.3 Step 3 (optional): Wanna pass on the passphrase? - Call your agent!
#### 2.2.3 Step 3 (optional): Wanna pass on the passphrase? - Call your agent!
`ssh-agent` is a program which can automatically do your authentication when logging in to a remote machine via ssh. Thus, to avoid providing the passphrase during multiple subsequent sessions, you can load the private key into memory using the ssh-agent.
`ssh-agent` is a program which can automatically do your authentication when logging in to a remote machine via ssh. Thus, to avoid providing the passphrase during multiple subsequent sessions, you can load the private key into memory using the ssh-agent.